An item with internal machine threads designed to fit the external machine threads of a tube fitting. It has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. The item, when installed, provides a method of locking and sealing the connection. See also locknut, pipe; nut (1), tube coupling and nut (1), plain, hexagon.
NSN 5915-01-217-4716
NSN 5985-01-069-6872
NSN 4140-00-905-6570
NSN 5990-01-036-5602
NSN 5975-01-061-9232
NSN 5920-00-336-2475
NSN 5895-00-346-7286
NSN 5905-00-817-6600
NSN 5965-01-288-0721
NSN 5990-01-534-8609
NSN 5960-00-707-0816
NSN 5930-00-814-0009